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S409

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ID = 12976
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to S409
Similar Tubes
Normally replaceable-slightly different:
  B442 ; H406D ; H410D ; RES094 ; S406 ; S410

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

3_48.png S409: Triotron Röhrenkatalog von 1942
Wolfgang Bauer

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Just Qvigstad
triotron_1_4.png
S409: Triotron Röhrenkatalog von 1942
Wolfgang Bauer

Collection of

Collection of a member from D
 
s409.jpg

 

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